# Phase II Clinical Trial of Recombinant SARS-CoV-2 Spike Protein Vaccine (CHO Cell) for the Prevention of COVID-19

> **NCT04990544** · PHASE2 · UNKNOWN · sponsor: **Shanghai Zerun Biotechnology Co.,Ltd** · enrollment: 528 (actual)

## Conditions studied

- COVID-19

## Interventions

- **BIOLOGICAL:** 202-CoV low adjuvant dose
- **BIOLOGICAL:** 202-CoV low antigen dose
- **BIOLOGICAL:** 202-CoV standard dose
- **BIOLOGICAL:** Placebo

## Key facts

- **NCT ID:** NCT04990544
- **Lead sponsor:** Shanghai Zerun Biotechnology Co.,Ltd
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2021-07-31
- **Primary completion:** 2022-04-22
- **Final completion:** 2023-11
- **Target enrollment:** 528 (ACTUAL)
- **Last updated:** 2023-04-19

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04990544

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04990544, "Phase II Clinical Trial of Recombinant SARS-CoV-2 Spike Protein Vaccine (CHO Cell) for the Prevention of COVID-19". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04990544. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*